C14A1 · Manufacturer communications

JEEP · 2026-02-19

Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C14A1-74 - Unintended Actuator Shaft Movement Detected-actuator Slipping. Customers may comment on the following: ● The service 4WD light is on in the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the DTCM with the latest available software.

JEEP · 2026-02-13

Flash: Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C14A1-74 - Unintended Actuator Shaft Movement Detected-actuator Slipping. Customers may comment on the following: ● The service 4WD light is on in the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the DTCM with the latest available software.

JEEP · 2026-01-30

Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● C14A1-74 - Unintended Actuator Shaft Movement Detected-actuator Slipping. Customers may comment on the following: ● The service 4WD light is on in the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the DTCM with the latest available software.

JEEP · 2026-01-30

Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● C14A1-74 - Unintended Actuator Shaft Movement Detected-actuator Slipping. Customers may comment on the following: ● The service 4WD light is on in the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the DTCM with the latest available software.

JEEP · 2025-12-05

Service 4WD light on in the cluster. C14A1-74 DTC will be present (Active or Stored).

JEEP · 2022-10-20

Transfer Case Replacement This bulletin involves replacing the transfer case assembly for Diagnostic Trouble Code (DTC) C14A1-74. Customers may experience a ?Service 4WD message? illumination. Upon further investigation the technician may find the following DTC has been set: C14A1-74 - Unintended Actuator Shaft Movement Detected-Actuator Slipping.